Magnet Yakayedzwa Kushandisa muChina yekare

Iron absorption pfuma yemagnetite yakawanikwa kwenguva yakareba. Mumavhoriyamu mapfumbamwe eLu's spring uye Autumn Annals, pane chirevo: "kana iwe une mutsa zvakakwana kukwezva simbi, unogona kutungamirira kwairi." Panguva iyoyo, vanhu vakadana "magnetism" se "mutsa". Vaiona simbi inokwezva magineti sekukwezva kwaamai kuvana vavo. Anofunga kuti: "dombo ndimai vedare, asi kune marudzi maviri ebwe: ibwe rine rudo rinogona kukwezva vana vake, asi ibwe risingaongi harigoni." Pamberi peHan Dynasty, vanhu vakanyora "Ci Shi", zvinoreva ibwe rerudo.

Sezvo magnetite inogona kukwezva simbi, inogona kukwezva mamwe masimbi here? Madzitateguru edu akaita maitiro akawanda, uye akawana kuti magineti aisakwanisa kukwezva kwete chete goridhe, sirivha, mhangura nemamwe masimbi, asiwo zvidhinha nematairi. MuWestern Han Dynasty, vanhu vakanga vatoona kuti magnetite inogona kukwezva simbi chete, pane zvimwe zvinhu. Kana magineti maviri akaiswa padyo nepedyo, dzimwe nguva anokwezvana uye dzimwe nguva anodzoserana. Zvinozivikanwa kuti magineti ane mapango maviri, imwe inonzi N pole uye imwe yacho S pole. Semapango anodzingana, mapango akatarisana anokwezvana. Vanhu panguva iyoyo vakanga vasingazive chokwadi ichi, asi vakanga vachiri kuchiona.

MuWestern Han Dynasty, kwaive nealchemist ainzi Luan da. Akaita zvidimbu zviviri zvechess sezvinhu nekugadzirisa polarity yezvidimbu zviviri. Dzimwe nguva zvidimbu zviviri zvaikwezvana, uye dzimwe nguva zvaipesana. Luan Da akaritumidza kuti "Dou Qi". Akapa bhuku racho kuna Emperor Wu weHan Dynasty uye akariratidza ipapo ipapo. Mambo Wu weHan Dynasty akashamisika, uye Longxin akafara zvekuti Luan akapihwa zita rekuti "General of Wuli". Luan Da akashandisa hunhu hwemagineti kugadzira zvinhu zvitsva kunyengedza Emperor Wu weHan Dynasty.

Nyika igororowo remagineti. Mapango ayo maviri ari padyo negeographical South pole uye geographical North pole zvakateerana. Naizvozvo, kana magineti ari pamusoro penyika achikwanisa kutenderera akasununguka, anodzosera mumwe nemumwe nemagineti akafanana, uye anokwezva magineti nezvinhu zvakasiyana, zvichiratidza kuchamhembe nekumaodzanyemba. Vanhu vekare vaisanzwisisa chokwadi ichi, asi vakanyatsojekesa nezvemhando iyi yechiitiko.